CN202471886U - On-line monitoring and protection device of series reactor - Google Patents
On-line monitoring and protection device of series reactor Download PDFInfo
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- CN202471886U CN202471886U CN2012200810861U CN201220081086U CN202471886U CN 202471886 U CN202471886 U CN 202471886U CN 2012200810861 U CN2012200810861 U CN 2012200810861U CN 201220081086 U CN201220081086 U CN 201220081086U CN 202471886 U CN202471886 U CN 202471886U
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Abstract
The utility model relates to an on-line monitoring and protection device of a series reactor for preventing accidents of coil ignition and burning and the like caused by turn-to-turn short circuit of the reactor, and belongs to the technical field of on-line monitoring and protection of the reactor. The technical scheme is that the on-line monitoring and protection device of the series reactor comprises a reactor (2), a detection coil (3), an insulation transformer (4), a filter module (5), a data collecting module (8) and a control computer (9), wherein the detection coil (3) is arranged on the reactor; the output of the detection coil is connected with the insulation transformer; the output of the insulation transformer is connected with the filter module; the output of the filter module is connected with the data collecting module; and the output of the data collecting module is connected with the control computer. According to the utility model, the effective monitoring of turn-to-turn short circuit accident of the reactor can be realized, the loop of the reactor in an accident is cut off immediately under the unmanned condition, the system and other devices are protected from being influenced, and the on-line monitoring and protection device of the series reactor has the functions of preventing accident extensification and the like caused by short circuit ignition.
Description
Technical field
The utility model relates to a kind of current-limiting reactor on-line monitoring and protective device, is used to prevent coil that reactor interturn short circuit causes accident such as burn on fire, belongs to reactor on-line monitoring and resist technology field.
Background technology
At present, China's power grid construction is accelerated, and scale enlarges, and transformer substation construction is also increasing.Along with the progress of development of science and technology with society, the consciousness of people's conservation of nature is more and more stronger, and the dry reactor that does not have oil becomes the main flow of reactor product gradually, is widely used in the power transmission and transformation field.Yet, in case the dry-type air-core reactor insulation processing improper, seal into water or insulation ag(e)ing to a certain degree, weak insulation course does not have insulating effect; Moment or appearance operation over-voltage condition at switching; Adjacent two circle lines will form a short-circuited conducting sleeve, and this moment, this short-circuited conducting sleeve temperature sharply raise, and the insulation that drives the adjacent lines layer is destroyed; Accident takes place rapidly, only tens of seconds of whole process.Although mylar, glass fiber and epoxy resin all belong to fire proofing,, insulation course is by high temperature cabonization under huge short-circuit current, and reactor accident on fire is of common occurrence, and injures the security of operation of other equipment.The detection of background technology and salvo effect are limited, can't detect Inter-turn Short Circuit Phenomenon, in addition unmanned the and accident of transformer station can not expection property, the effect of prevention reactor accident on fire is still not fully up to expectations.How to be implemented in the road of the moment excision reactor that turn-to-turn short circuit occurs, to avoid the accident extension to become the technical matters that those skilled in the art need to be resolved hurrily.
The utility model content
The utility model purpose provides a kind of current-limiting reactor on-line monitoring and protective device; Realization is to effective monitoring of reactor interturn short circuit accident; Realize unattended cut-out of the following very first time of situation accident reactor loop; Protection system and other equipment are unaffected, avoid the short-circuit fire extension that causes the accident, and solve the problems referred to above that exist in the background technology.
The technical scheme of the utility model is:
A kind of current-limiting reactor on-line monitoring and protective device; Comprise reactor, detecting coil, isolating transformer, filter module, data acquisition module and control computer; Detecting coil is arranged on the reactor, and the output of detecting coil connects isolating transformer, and the output of isolating transformer connects filter module; The output of filter module connects data acquisition module, and the output of data acquisition module connects control computer.
Described detecting coil is arranged on the reactor of reactor and seals the outside, and detecting coil arranges that in pairs symmetry is installed; Be connected in series; Every pair of magnetic field detecting coil is identical by two physical dimensions and the number of turn, and around forming to opposite coil, through the change in voltage of monitoring detecting coil opening; Whether symmetrical, judge promptly whether the reactor built-in electrical insulation breakage takes place cause turn-to-turn short circuit if can detect magnetic field.The voltage differential signal that is detected is meant because alternating magnetic field is responded to the induced voltage that produces.After turn-to-turn short circuit took place, the alternating magnetic field of reactor itself can change, thereby no longer symmetrical, and at this moment detecting coil brings out the also appearance variation thereupon of existing induced voltage parameter.
The utility model also is provided with resistance and TVS Transient Voltage Suppressor, is connected across filter module after the series connection.
Carry out the signal transmission through light R-T unit between data acquisition module and the control computer.
The differential voltage that detecting coil induced; Behind isolating transformer; Guarantee that measuring junction and electric system are independent of each other; Filter module guarantees to collect the correctness of signal, and resistance and TVS Transient Voltage Suppressor protected data acquisition module, data acquisition module are used for the signals collecting through previous processed is got into control computer.Control computer is provided with current-limiting reactor monitoring and defence program, and current-limiting reactor monitoring and defence program set threshold value, through to comparing with threshold value after the acquired signal computing, judge whether reactor built-in electrical insulation structure is intact.Impaired if insulate, inner turn-to-turn short circuit, computing machine will be to protection unit trip signal, and the protection device motion is excised the road of reactor from circuit.
The beneficial effect of the utility model: the present invention avoids the generation of major accidents such as reactor is on fire; Improve existing protected mode, reactor is drawn accident that turn-to-turn short circuit causes enlarge and play effective protective action, the inner turn-to-turn short circuit situation that exists of discovery reactor that can be promptly and accurately; And rapid tripping switch; Excision accident loop, thus guarantee that reactor is not on fire, and power plant safety and other equipment are unaffected.The present invention improves the current limiting reactor operating safety factor, thereby guarantees the safe operation of transformer.The present invention can extend on the current limiting reactor, can avoid the turn-to-turn short circuit accident to lose than large economy to what transformer and follow-up equipment brought.
Description of drawings
Among the figure: 1. power supply, 2. reactor, 3. detecting coil, 4. isolating transformer, 5. filter module, 6. resistance, 7.TVS Transient Voltage Suppressor, 8. data acquisition module, 9. control computer.
Accompanying drawing 2 is the utility model embodiment detecting coil scheme of installations;
Among the figure: 2. reactor, 3. detecting coil, 10. reactor is sealed, 11. air flues, 12. bakelite rods.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further through embodiment.
In an embodiment; A kind of current-limiting reactor on-line monitoring and protective device comprise reactor 2, detecting coil 3, isolating transformer 4, filter module 5, data acquisition module 8 and control computer 9, and detecting coil is arranged on the reactor; The output of detecting coil connects isolating transformer; The output of isolating transformer connects filter module, and the output of filter module connects data acquisition module, and the output of data acquisition module connects control computer.
Described detecting coil is arranged on the reactor of reactor and seals 10 outsides, and detecting coil arranges that in pairs symmetry is installed, and is connected in series, and every pair of magnetic field detecting coil is identical by two physical dimensions and the number of turn, and around forming to opposite coil.In the reactor production run; In, seal inside or outermost and seal the outside and install a pair of detecting coil additional, detecting coil is with the high insulation resistance cable of the band RVV lead as secondary coil, and is installed on reactor and seals the outside; And there is certain distance in reactor between sealing; The air flue 11 that this distance is, detecting coil terminal are drawn after fixing with bakelite rod 12, thereby solve once and the dielectric level problem between the secondary.
The utility model also is provided with resistance 6 and TVS Transient Voltage Suppressor 7, is connected across filter module after the series connection.
The course of work: the differential voltage that detecting coil induced; Behind isolating transformer; Guarantee that measuring junction and electric system are independent of each other; Filter module guarantees to collect the correctness of signal, and resistance and TVS Transient Voltage Suppressor protected data acquisition module, data acquisition module are used for the signals collecting through previous processed is got into control computer.Control computer is provided with current-limiting reactor monitoring and defence program, and current-limiting reactor monitoring and defence program set threshold value, through to comparing with threshold value after the acquired signal computing, judge whether reactor built-in electrical insulation structure is intact.Impaired if insulate, inner turn-to-turn short circuit, computing machine will be to protection unit trip signal, and the protection device motion is excised the road of reactor from circuit.Light R-T unit guarantees that in order to avoid on-the-spot electromagnetic interference (EMI) signal is accurate, because transformer station exists a large amount of electromagnetic interference (EMI) to exist, so light R-T unit is adopted in the transmission of the signal of the utility model.
Claims (3)
1. current-limiting reactor on-line monitoring and protective device; It is characterized in that: comprise reactor (2), detecting coil (3), isolating transformer (4), filter module (5), data acquisition module (8) and control computer (9); Detecting coil is arranged on the reactor, and the output of detecting coil connects isolating transformer, and the output of isolating transformer connects filter module; The output of filter module connects data acquisition module, and the output of data acquisition module connects control computer.
2. a kind of current-limiting reactor on-line monitoring and the protective device according to claim 1; It is characterized in that the reactor that described detecting coil is arranged on reactor seals (10) outside; Detecting coil arranges that in pairs symmetry is installed, and is connected in series; Every pair of magnetic field detecting coil is identical by two physical dimensions and the number of turn, and around forming to opposite coil.
3. according to claim 1 or 2 said a kind of current-limiting reactor on-line monitoring and protective devices, it is characterized in that also being provided with resistance (6) and TVS Transient Voltage Suppressor (7), be connected across filter module after the series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200810861U CN202471886U (en) | 2012-03-07 | 2012-03-07 | On-line monitoring and protection device of series reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200810861U CN202471886U (en) | 2012-03-07 | 2012-03-07 | On-line monitoring and protection device of series reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202471886U true CN202471886U (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200810861U Expired - Fee Related CN202471886U (en) | 2012-03-07 | 2012-03-07 | On-line monitoring and protection device of series reactor |
Country Status (1)
| Country | Link |
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| CN (1) | CN202471886U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015081849A1 (en) * | 2013-12-03 | 2015-06-11 | 国家电网公司 | Relay protection control method for serial connected reactor used by 35 kv transformer at 500 kv substation |
| CN106771840A (en) * | 2017-01-23 | 2017-05-31 | 西安理工大学 | A kind of dry type hollow reactor interturn short circuit fault online test method |
| CN107356837A (en) * | 2017-07-11 | 2017-11-17 | 国网福建省电力有限公司 | A kind of improved reactor interturn short circuit fault detection recognition method |
| CN112345983A (en) * | 2020-11-10 | 2021-02-09 | 国网江苏省电力有限公司盐城供电分公司 | Reactor winding fault detection system based on optical fiber transmission and detection method thereof |
-
2012
- 2012-03-07 CN CN2012200810861U patent/CN202471886U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015081849A1 (en) * | 2013-12-03 | 2015-06-11 | 国家电网公司 | Relay protection control method for serial connected reactor used by 35 kv transformer at 500 kv substation |
| CN106771840A (en) * | 2017-01-23 | 2017-05-31 | 西安理工大学 | A kind of dry type hollow reactor interturn short circuit fault online test method |
| CN107356837A (en) * | 2017-07-11 | 2017-11-17 | 国网福建省电力有限公司 | A kind of improved reactor interturn short circuit fault detection recognition method |
| CN107356837B (en) * | 2017-07-11 | 2019-11-26 | 国网福建省电力有限公司莆田供电公司 | A kind of improved reactor interturn short circuit fault detection recognition method |
| CN112345983A (en) * | 2020-11-10 | 2021-02-09 | 国网江苏省电力有限公司盐城供电分公司 | Reactor winding fault detection system based on optical fiber transmission and detection method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20190307 |
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| CF01 | Termination of patent right due to non-payment of annual fee |